Toner cartridge for a printer



FIG. 1 is a top perspective view of a toner cartridge for a printer showing my new design;

FIG. 2 is a bottom perspective view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a front elevational view;

FIG. 6 is a rear elevational view;

FIG. 7 is a top plan view; and

FIG. 8 is a bottom plan view. 

The ornamental design for a toner cartridge for a printer, as shown. 